Four Seasons 64128 A/C Evaporator Core

Four Seasons 64128 Evaporator Core

The Four Seasons 64128 evaporator core is a plate-and-fin A/C evaporator core built for select Chevrolet and GMC truck applications. It is sized for the HVAC case with a 11-7/8 in. width, 8-7/8 in. height, and 1-1/2 in. depth to match the specified replacement fitment.

Key Features

• Brand: Four Seasons Evaporator Core
• Part number: 64128
• Plate & fin evaporator core construction
• Core dimensions: 300.038 mm wide, 225 mm high, 38 mm deep
• Replacement for select Chevrolet Silverado and GMC Sierra HVAC systems
• Cross-reference: Continental 64128

Product Details

This evaporator core is part of Four Seasons’ evaporator core line and is specified for HVAC service on late-model Chevrolet Silverado and GMC Sierra trucks. It is used in the air conditioning system to transfer heat from the cabin air stream, supporting cold air delivery through the vehicle’s climate control system. The Four Seasons 64128 is listed for 2019-2024 Chevrolet Cheyenne, 2019-2024 Chevrolet Silverado 1500, 2020-2024 Chevrolet Silverado 2500 HD, 2020-2024 Chevrolet Silverado 3500 HD, 2019-2024 GMC Sierra 1500, 2020-2024 GMC Sierra 2500 HD, and 2020-2024 GMC Sierra 3500 HD. It also covers 2022 Chevrolet Silverado 1500 LTD, 2022 GMC Sierra 1500 Limited, 2019 GMC Sierra 1500 Limited, 2019-2020 GMC Sierra, and 2019 Chevrolet Silverado 1500 LD. This part number, 64128, is also referenced by UAC EV9409307PFC for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Restricted A/C heat transfer inside the HVAC case
• Leaks from a worn evaporator core
• Odors or moisture issues tied to a failing evaporator assembly
• Loss of A/C performance in Chevrolet Silverado and GMC Sierra trucks

Installation Notes and Tips

Verify the HVAC case dimensions and vehicle application before installation. Compare the original core size and connector layout to the replacement part number 64128 to confirm proper match-up. Because evaporator replacement typically requires access to the HVAC housing, inspect related seals, expansion valve components, and refrigerant system condition during service. For fitment-based searches, this part is commonly sought as an evaporator core for 2019-2024 Chevrolet Silverado 1500 and 2019-2024 GMC Sierra 1500 applications.

Quality Assurance

Four Seasons supplies HVAC replacement components for automotive air conditioning service, and this evaporator core is built to the listed dimensional and construction specifications for the stated applications. Confirm the vehicle year, make, and model against the fitment data before ordering. Part number 64128 is a direct reference point for catalog matching on Chevrolet Silverado and GMC Sierra evaporator core replacement.